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MCQs

Total Questions : 369 | Page 33 of 37 pages
Question 321. The process of folding depends upon the
  1.    solvent
  2.    the concentration of salts
  3.    pH
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 322. Proteins that do not function but recover their activity upon folding are
  1.    denatured
  2.    folded
  3.    synthesized
  4.    hydrolyzed
 Discuss Question
Answer: Option A. -> denatured
Answer: (a).denatured
Question 323. Amino acids interact with each other to produce a well-defined 3D structure known as
  1.    native state
  2.    denaturing
  3.    1° structure of proteins
  4.    synthesis of proteins
 Discuss Question
Answer: Option A. -> native state
Answer: (a).native state
Question 324. A process by which a protein structure assumes its functional shape or conformation is
  1.    denaturing
  2.    folding
  3.    synthesis
  4.    hydrolysis
 Discuss Question
Answer: Option B. -> folding
Answer: (b).folding
Question 325. Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that
  1.    only one chromatid of a chromosome was labeled
  2.    both chromatids of a chromosome were labeled
  3.    both (a) and (b)
  4.    neither chromatid was labeled
 Discuss Question
Answer: Option B. -> both chromatids of a chromosome were labeled
Answer: (b).both chromatids of a chromosome were labeled
Question 326. Messelsen and Stahl model of replication was called
  1.    conservative replication
  2.    semi-conservative replication
  3.    dispersive replication
  4.    Cri du Chat
 Discuss Question
Answer: Option B. -> semi-conservative replication
Answer: (b).semi-conservative replication
Question 327. The 5' and 3' numbers are related to the
  1.    length of the DNA strand
  2.    carbon number in sugar
  3.    the number of phosphates
  4.    the base pair rule
 Discuss Question
Answer: Option B. -> carbon number in sugar
Answer: (b).carbon number in sugar
Question 328. In DNA double helix, the two DNA chains are held together by
  1.    covalent bonds between the pair of bases
  2.    hydrogen bonds between the pair of bases
  3.    ionic bonds between the pair of bases
  4.    none of the above
 Discuss Question
Answer: Option B. -> hydrogen bonds between the pair of bases
Answer: (b).hydrogen bonds between the pair of bases
Question 329. The most common liquid volumes in molecular biology are measured in
  1.    ml
  2.    μl
  3.    nl
  4.    1
 Discuss Question
Answer: Option B. -> μl
Answer: (b).μl
Question 330. The number of proteins in human genome are
  1.    2500
  2.    2000
  3.    2600
  4.    3000
 Discuss Question
Answer: Option C. -> 2600
Answer: (c).2600

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